(After the upgrade of springboot2, many new features and differences have been brought to the underlying source code design. This set of video tutorials is based on springboot versions 2.3 and 2.4. It is suitable for learners, beginners with spring and spring MVC foundation or those who want to know more about springboot. This tutorial includes chapters on core fundamentals, web principles, unit testing, data access, and metrics monitoring. Through the study of the above contents, let your springboot level to a higher level and carry out application development easily!)